Changeable exhibitor



Apr. 3, 1923. 11,450,850) M. A. G RIP I CHANGEABLE EXHIBITOR Filed Sept. 7, 1922 5 sheets-sheet 2 Marfiizz AZ Grw Apr. 3, 1923. 1,4503%) I M. A. GRIP GHANGEABLE EXHIBITOR Filed Sept. 7, 1922 5 sheets-sheet 5 Patented Apr. 3, 1923.

STATES MARTIN A. GRIP, OIE CHIPPEWA FALLS, WISCONSIN.

CHAN GEABLE EXHIBITOR.

Application filed September 7, 1922. Serial No. 586,751.

1 0 all whom it may concern: 1

Be it known that I, MARTIN A. GRIP, a citizen of the United States, residing at ('hippewa Falls, in the county of Chippewa and State of \Visconsin, have invented a new and useful Changeable Exhibitor, of which the following is a specification.

This invention aims to provide novel means for-displaying difierentmasses of advertising matter, one after another, curtains being drawn whilst the advertising matter is changing, novel means being provided for moving the advertising matter and for opcrating the curtain.

It is; within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanying drawings:

l igure 1 shows in front elevation, a device constructed in accordance with the invention; Figure 2 is a vertical transverse section; Figure 3 is a longitudinal section on the line 3-3 of Figure 2, the line 22 on Figure3 indicating the cutting plane on which Figure 2 is taken; Figure 4 is a sectional detail showing the mounting for the belt which carries the advertising matter; Figure 5 is a front elevation wherein parts are broken away.

The working parts of the device forming the subject matter of this application may be mounted in various ways. As shown, there is provided a frame or cabinet 1 including a top 2, a bottom 3, a back 4, and a front 5 having an opening 6. At this point it may be stated that the cabinet may be fitted up so as to represent a proscenium of a stage, this detail being a matter of decoration and forming no part of the present invention. As an indication of what may be done along this line a fly 70 is attached to the front 5 and extends downwardly with respect to the opening 6. The frame embodies ends 7 and 8. A vertical partition 9 extends inwardly from the end 8 and terminates short of the end 7. The partition 9 has an opening 10 visiblethrough the opening 6 in the front 5. A platform 11 extends backwardly from the front 5 t0 the vertical partition 9. A support or partition 12 is located adjacent to the end 7 of the cabinet and extends between the platform 11 and and the bottom 3. The platform 11 has an opening 14 located between the partition 1.2 and the end 7.

Vertically adjustable upper and lower bearings 15 are carried by the ends 7 and S of the cabinet 1. A driven shaft 16 is journaled in the upper bearings. A drive shaft 17 is journaled in the lower bearings. A sprocket drum 18 is mounted on the shaft 16. A sprocket drum 19 is mounted on the shaft 17. A belt 20 is passed about the sprocket drums 18 and 19 and has cleats 21 adapted to cooperate with the sprocket drums. Advertising matter of different sorts is inscribed indicated at 22 on the belt 20. Advertising matter 22 is visible through the opening 10 in the vertical partition i).

A motor 23 is mounted on the platform 11 or elsewhere. A frame 24 is supported on the partition 12. An upper shaft 25 is journaled in the frame 24 and in the partition 12. A lower shaft 26 is jo-urnaled in the frame 24 and in the partition 12. A gear train 27, carried by the frame 24 forms an operative connection between the shafts 25 and 26. A wheel is secured to the lower shaft 26. A belt 29 is engaged with the wheel 28 and wit-h the pulley of the motor 23. A small gear wheel 30 and a larger gear wheel 31 are secured to the drive shaft 17.

An arcuate rack 32 meshes with the ear wheel 31. The rack 32 has a crank 33. e crank 33 of the rack is supplied with slots 34. A crank arm 35 is secured by a set screw 36 to the upper shaft 26. The set screw 36 enables the crank arm 35 to be shifted longitudinally of the shaft 26. The shank 33 of the rack 32 is overlapped on the crank arm 35. The crank arm 35 carries clamping devices 37, such as bolts, received in the slots 34 of the shank 33 of the rack 32. The construction is such that the arcuate rack 32 (Figure 2) may be adjusted radially with respect to the shaft 26 thereby to enable the rack to mesh with the small gear wheel 30 or the large gear wheel 31. \Vhen the 'rack 32 meshes with the small gear wheel 30, the crank arm 35 is shifted to the right (Figure 3) and is held in adjusted position by the set screw 36. The parts 33 and 35 may be alluded to as a longitudinally adjustable crank arm mounted on the shaft 26 for adjustment longitudinally of the shaft. The shaft 26 has cranks 38 and 39.

A uide rod 40 extends between the ends 7 an? 8 of the cabinet 1 and is located adjacent to the front 2. Curtains 41 and 42 are provided. The curtains 41 and 42 are slidably mounted by means of rings 43 on the guide rod 40. The numeral 44 marks a flexible element. The ends of the flexible element 44 are connected to the cranks 38 and 39 as shown in Figure 2. The flexible element 44 passes upwardly over idlers 45' supported at 46 on the ends 7 and 8 of the cabinet 1. The flexible element 44 is passed about sheaves 47 mounted on the guide rod 40 adjacent to the end 7 of the cabinet 1, as shown in Figure 5. On the sheaves 47 the flexible element extends longitudinally of the guide rod 40 and is looped about a sheave 48 journaled on the guide rod and located adj aoent to the end 8 of the cabinet. One run of the flexible element 44 is secured at 49 to the innermost ring 43 of the curtain 42. The other run of the flexible element is secured at 50 to the innermost ring 43 of the curtain 4]..

In practical operation, motion is transmitted from the motor 23, by way of the wheel 28 and the belt 29 to the shaft 25. From the shaft 25 motion is transmitted to the shaft 26 and the gear train 27. lVhen the shaft 26is rotated, the arcuate. rack 32 is brought into engagement with the gear wheel 31 and the shaft 17 is rotated. When the shaft 17 is rotated, the sprocket drum 19 causes the .belt 20 to advance a predetermined amount. Thus, the advertising matter 22 is made visible througli the opening 10. It is obvious that a means is provided whereby a step by step advancement is imparted to the belt 20 and the length of each step may be adjusted. This adjustment is brought about by causing the rack 32 to engage with either of the gear Wheels 30 or 31 as hereinbefore explained.

When the shaft 26 is rotated, the cranks 38 and 39 cause the flexible element 44'to receive a reciprocating movement. A glance at Figure 5 will demonstrate that when the flexible element 44 is pulled in one direction, the curtains 41 and 42 will be closed whereas when the flexible element is pulled in an opposite direction, the curtains will be opened. Whilst the curtains 41 and 42 are in a closed position, the belt 20 is actuated as hereinbefore explained, and a new mass of advertising matter is presented at the opening 10 to be made visible when the curtains 41 and 42 are moved again to open position.

What is claimed is 1. In a device of the class described, a frame; shafts journaled in the frame; a display belt engaged with one shaft; a gear wheel on said shaft; a segment carried by the other shaft. and adapted to move into and out of engagement with the gearwheel; a curtain slidable on the frame and constituting a shield for the belt; and means for "nected at its ends to the cranks and connected intermediate its ends to the curtain; and means for guiding the intermediate portion of the flexible element.

3. In a. device of the class described. a

frame; shafts journaled in the frame; a

display belt assembled with one shaft; a gear wheel on' said shaft; a segment carried by the other shaft and adapted to move 1nto and out of engagement with the gear wheel;

cranks on said other shaft; :1 slidable curtain constituting a shield for the belt; a flexible element assembled at its ends with the cranks and connected intermediate its ends with the curtain; and means for guiding the flexible element.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in tliapresence of two witnesses.

MARTIN A. GRIP.

Witnesses:

ALEXAND R WILEY, GRACE 'DoRLANn. 

